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- Amplidyne
- Separately excited dc generator
- Synchro
- Self excited dc generator
Which of the following can be used as a rotating amplifier in a control system?
| |
A. | 3 and 4 [Wrong Answer] |
B. | 1 and 2 [Correct Answer] |
C. | 1, 2 and 3 [Wrong Answer] |
D. | all [Wrong Answer] |